<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent" >

  <LinearLayout
    android:id="@+id/view_content"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal" >
  </LinearLayout>

  <RelativeLayout
    android:id="@+id/holder"
    android:layout_width="120dp"
    android:layout_height="match_parent"
    android:clickable="true"
    android:background="@drawable/holder_bg">

    <TextView
      android:id="@+id/delete"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:drawableLeft="@drawable/del_icon_normal"
      android:layout_centerInParent="true"
      android:gravity="center"
      android:textColor="@color/floralwhite"
      android:text="刪除" />
  </RelativeLayout>

</merge>

 /**
 * SlideView 繼承自LinearLayout
 */
public class SlideView extends LinearLayout {

  private static final String TAG = "SlideView";

  private Context mContext;

  // 用來放置所有view的容器
  private LinearLayout mViewContent;

  // 用來放置內(nèi)置view的容器，比如刪除 按鈕
  private RelativeLayout mHolder;

  // 彈性滑動對象，提供彈性滑動效果
  private Scroller mScroller;

  // 滑動回調(diào)接口，用來向上層通知滑動事件
  private OnSlideListener mOnSlideListener;

  // 內(nèi)置容器的寬度 單位：dp
  private int mHolderWidth = 120;

  // 分別記錄上次滑動的坐標(biāo)
  private int mLastX = 0;
  private int mLastY = 0;

  // 用來控制滑動角度，僅當(dāng)角度a滿足如下條件才進(jìn)行滑動：tan a = deltaX / deltaY > 2
  private static final int TAN = 2;

  public interface OnSlideListener {
    // SlideView的三種狀態(tài)：開始滑動，打開，關(guān)閉
    public static final int SLIDE_STATUS_OFF = 0;
    public static final int SLIDE_STATUS_START_SCROLL = 1;
    public static final int SLIDE_STATUS_ON = 2;

    /**
     * @param view
     *      current SlideView
     * @param status
     *      SLIDE_STATUS_ON, SLIDE_STATUS_OFF or
     *      SLIDE_STATUS_START_SCROLL
     */
    public void onSlide(View view, int status);
  }

  public SlideView(Context context) {
    super(context);
    initView();
  }

  public SlideView(Context context, AttributeSet attrs) {
    super(context, attrs);
    initView();
  }

  private void initView() {
    mContext = getContext();
    // 初始化彈性滑動對象
    mScroller = new Scroller(mContext);
    // 設(shè)置其方向為橫向
    setOrientation(LinearLayout.HORIZONTAL);
    // 將slide_view_merge加載進(jìn)來
    View.inflate(mContext, R.layout.slide_view_merge, this);
    mViewContent = (LinearLayout) findViewById(R.id.view_content);
    mHolderWidth = Math.round(TypedValue.applyDimension(
        TypedValue.COMPLEX_UNIT_DIP, mHolderWidth, getResources()
            .getDisplayMetrics()));
  }

  // 設(shè)置按鈕的內(nèi)容，也可以設(shè)置圖標(biāo)啥的，我沒寫
  public void setButtonText(CharSequence text) {
    ((TextView) findViewById(R.id.delete)).setText(text);
  }

  // 將view加入到ViewContent中
  public void setContentView(View view) {
    mViewContent.addView(view);
  }

  // 設(shè)置滑動回調(diào)
  public void setOnSlideListener(OnSlideListener onSlideListener) {
    mOnSlideListener = onSlideListener;
  }

  // 將當(dāng)前狀態(tài)置為關(guān)閉
  public void shrink() {
    if (getScrollX() != 0) {
      this.smoothScrollTo(0, 0);
    }
  }

  // 根據(jù)MotionEvent來進(jìn)行滑動，這個方法的作用相當(dāng)于onTouchEvent
  // 如果你不需要處理滑動沖突，可以直接重命名，照樣能正常工作
  public void onRequireTouchEvent(MotionEvent event) {
    int x = (int) event.getX();
    int y = (int) event.getY();
    int scrollX = getScrollX();
    Log.d(TAG, "x=" + x + " y=" + y);

    switch (event.getAction()) {
    case MotionEvent.ACTION_DOWN: {
      if (!mScroller.isFinished()) {
        mScroller.abortAnimation();
      }
      if (mOnSlideListener != null) {
        mOnSlideListener.onSlide(this,
            OnSlideListener.SLIDE_STATUS_START_SCROLL);
      }
      break;
    }
    case MotionEvent.ACTION_MOVE: {
      int deltaX = x - mLastX;
      int deltaY = y - mLastY;
      if (Math.abs(deltaX) < Math.abs(deltaY) * TAN) {
        // 滑動不滿足條件，不做橫向滑動
        break;
      }

      // 計算滑動終點(diǎn)是否合法，防止滑動越界
      int newScrollX = scrollX - deltaX;
      if (deltaX != 0) {
        if (newScrollX < 0) {
          newScrollX = 0;
        } else if (newScrollX > mHolderWidth) {
          newScrollX = mHolderWidth;
        }
        this.scrollTo(newScrollX, 0);
      }
      break;
    }
    case MotionEvent.ACTION_UP: {
      int newScrollX = 0;
      // 這里做了下判斷，當(dāng)松開手的時候，會自動向兩邊滑動，具體向哪邊滑，要看當(dāng)前所處的位置
      if (scrollX - mHolderWidth * 0.75 > 0) {
        newScrollX = mHolderWidth;
      }
      // 慢慢滑向終點(diǎn)
      this.smoothScrollTo(newScrollX, 0);
      // 通知上層滑動事件
      if (mOnSlideListener != null) {
        mOnSlideListener.onSlide(this,
            newScrollX == 0 ? OnSlideListener.SLIDE_STATUS_OFF
                : OnSlideListener.SLIDE_STATUS_ON);
      }
      break;
    }
    default:
      break;
    }

    mLastX = x;
    mLastY = y;
  }

  private void smoothScrollTo(int destX, int destY) {
    // 緩慢滾動到指定位置
    int scrollX = getScrollX();
    int delta = destX - scrollX;
    // 以三倍時長滑向destX，效果就是慢慢滑動
    mScroller.startScroll(scrollX, 0, delta, 0, Math.abs(delta) * 3);
    invalidate();
  }

  @Override
  public void computeScroll() {
    if (mScroller.computeScrollOffset()) {
      scrollTo(mScroller.getCurrX(), mScroller.getCurrY());
      postInvalidate();
    }
  }

}

  @Override
  public boolean onTouchEvent(MotionEvent event) {
    switch (event.getAction()) {
    case MotionEvent.ACTION_DOWN: {
      int x = (int) event.getX();
      int y = (int) event.getY();
      //我們想知道當(dāng)前點(diǎn)擊了哪一行
      int position = pointToPosition(x, y);
      Log.e(TAG, "postion=" + position);
      if (position != INVALID_POSITION) {
        //得到當(dāng)前點(diǎn)擊行的數(shù)據(jù)從而取出當(dāng)前行的item。
        //可能有人懷疑，為什么要這么干？為什么不用getChildAt(position)？
        //因為ListView會進(jìn)行緩存，如果你不這么干，有些行的view你是得不到的。
        MessageItem data = (MessageItem) getItemAtPosition(position);
        mFocusedItemView = data.slideView;
        Log.e(TAG, "FocusedItemView=" + mFocusedItemView);
      }
    }
    default:
      break;
    }

    //向當(dāng)前點(diǎn)擊的view發(fā)送滑動事件請求，其實就是向SlideView發(fā)請求
    if (mFocusedItemView != null) {
      mFocusedItemView.onRequireTouchEvent(event);
    }

    return super.onTouchEvent(event);
  }

public class MainActivity extends Activity implements OnItemClickListener,
    OnClickListener, OnSlideListener {

  private static final String TAG = "MainActivity";

  private ListViewCompat mListView;

  private List<MessageItem> mMessageItems = new ArrayList<MainActivity.MessageItem>();

  private SlideAdapter mSlideAdapter;

  // 上次處于打開狀態(tài)的SlideView
  private SlideView mLastSlideViewWithStatusOn;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    initView();
  }

  private void initView() {
    mListView = (ListViewCompat) findViewById(R.id.list);

    for (int i = 0; i < 20; i++) {
      MessageItem item = new MessageItem();
      if (i % 3 == 0) {
        item.iconRes = R.drawable.default_qq_avatar;
        item.title = "騰訊新聞";
        item.msg = "青島爆炸滿月：大量魚蝦死亡";
        item.time = "晚上18:18";
      } else {
        item.iconRes = R.drawable.wechat_icon;
        item.title = "微信團(tuán)隊";
        item.msg = "歡迎你使用微信";
        item.time = "12月18日";
      }
      mMessageItems.add(item);
    }
    mSlideAdapter = new SlideAdapter();
    mListView.setAdapter(mSlideAdapter);
    mListView.setOnItemClickListener(this);
  }

  private class SlideAdapter extends BaseAdapter {

    private LayoutInflater mInflater;

    SlideAdapter() {
      super();
      mInflater = getLayoutInflater();
    }

    @Override
    public int getCount() {
      return mMessageItems.size();
    }

    @Override
    public Object getItem(int position) {
      return mMessageItems.get(position);
    }

    @Override
    public long getItemId(int position) {
      return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
      ViewHolder holder;
      SlideView slideView = (SlideView) convertView;
      if (slideView == null) {
        // 這里是我們的item
        View itemView = mInflater.inflate(R.layout.list_item, null);

        slideView = new SlideView(MainActivity.this);
        // 這里把item加入到slideView
        slideView.setContentView(itemView);
        // 下面是做一些數(shù)據(jù)緩存
        holder = new ViewHolder(slideView);
        slideView.setOnSlideListener(MainActivity.this);
        slideView.setTag(holder);
      } else {
        holder = (ViewHolder) slideView.getTag();
      }
      MessageItem item = mMessageItems.get(position);
      item.slideView = slideView;
      item.slideView.shrink();

      holder.icon.setImageResource(item.iconRes);
      holder.title.setText(item.title);
      holder.msg.setText(item.msg);
      holder.time.setText(item.time);
      holder.deleteHolder.setOnClickListener(MainActivity.this);

      return slideView;
    }

  }

  public class MessageItem {
    public int iconRes;
    public String title;
    public String msg;
    public String time;
    public SlideView slideView;
  }

  private static class ViewHolder {
    public ImageView icon;
    public TextView title;
    public TextView msg;
    public TextView time;
    public ViewGroup deleteHolder;

    ViewHolder(View view) {
      icon = (ImageView) view.findViewById(R.id.icon);
      title = (TextView) view.findViewById(R.id.title);
      msg = (TextView) view.findViewById(R.id.msg);
      time = (TextView) view.findViewById(R.id.time);
      deleteHolder = (ViewGroup) view.findViewById(R.id.holder);
    }
  }

  @Override
  public void onItemClick(AdapterView<?> parent, View view, int position,
      long id) {
    // 這里處理ListItem的點(diǎn)擊事件
    Log.e(TAG, "onItemClick position=" + position);
  }

  @Override
  public void onSlide(View view, int status) {
    // 如果當(dāng)前存在已經(jīng)打開的SlideView，那么將其關(guān)閉
    if (mLastSlideViewWithStatusOn != null
        && mLastSlideViewWithStatusOn != view) {
      mLastSlideViewWithStatusOn.shrink();
    }
    // 記錄本次處于打開狀態(tài)的view
    if (status == SLIDE_STATUS_ON) {
      mLastSlideViewWithStatusOn = (SlideView) view;
    }
  }

  @Override
  public void onClick(View v) {
    // 這里處理刪除按鈕的點(diǎn)擊事件，可以刪除對話
    if (v.getId() == R.id.holder) {
      int position = mListView.getPositionForView(v);
      if (position != ListView.INVALID_POSITION) {
        mMessageItems.remove(position);
        mSlideAdapter.notifyDataSetChanged();
      }
      Log.e(TAG, "onClick v=" + v);
    }
  }
}